Gearing



(No Model.) 3 Sheets-Sheet 1.

F. H. RICHARDS.

GEARING.

Patented Dec. 22, 1896.

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Inventor.-

Wz'tn esses 0.. WASHHNGTOK u c (No Model.) 3 Sheets-Sheet 2,.

I. H. RICHARDS. GEARING.

No. 573,620. Patented Dec. 22, 1896 7 IHF norms PErERs co, moroumo"WASHINGTON. n c.

(No Model.) 3 8heetsSheet 3.

F. H. RICHARDS.

GEARING.

No. 573,620. Patented Dec. 22, 1896.

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Wz' tnesses:

UNITED STATES PATENT OFFICE.

FRANCIS I-I. RICHARDS, OF HARTFORD, CONNECTICUT.

GEARING.

SPECIFICATION forming part of Letters Patent No. 573,620, dated December22, 1896.

Application filed April 6, 1896. berial No. 585,345. (No model.)

To all whom it may concern:

Be it known that I, FRANCIS H. RICHARDS, a citizen of the United States,residing at Hartford, in the county of Hartford and State ofConnecticut, have invented certain new and useful Improvements inGearing, of which the following is a specification.

Thisinvention relates to gearing of the class especially adapted forstarting and stopping the rotation about its axis of an orbitallymovablewheelsuch, for instance, as a typewheeland is especially adapted for usein connection with a certain class of key-operated mechanisms-such, forinstance, as that described in my Patent No. 401,371, granted April 16,1889.

One of the main objects of my present invention is to provide animproved coupling mechanism by means of which a rotative driven gear maybe carried into and out of engagement with a drivinggear, the orbit ofwhich corresponds to the orbit of movement of the driven gear, thecoupling and uncoupling of the driven gear being effected atpredetermined points in its orbital movement.

Another important object of my invention consists in the provision ofmeans for so regulating the number of rotations of the driven gear,occurring during the period beginning with the co uplin gof such drivengear with the driving-gear and its uncoupling therefrom, that the drivengear may be rotated a determined number of times when such rotationcommences at one point in the orbital movement of this gear and adiiferent number of times when the rotation begins at another point insuch orbital movement.

In the drawings accompanying and forming part of this application,Figure 1 is a sectional plan of a key-operated mechanism embodying mypresent invention. Fig. 2 is a vertical longitudinal sectional elevationof the same. Fig. 3 is a sectional plan of a portion of the mechanismillustrated in Fig. 1 and shows two positions of the gear-shiftingmechanism for permitting one rotation of the driven gear. Fig. 4 is asectional elevation, in full and dotted lines, of a portion of themechanism shown in Fig. 3, the section being taken in line 11 Z) thereofand illustrating the coupling of the driven gear with the drivinggear.Fig. 5 is a similar view illustrating the uncoupling of the driven gearfrom the driving-gear, the section being taken in line 0 c, Fig. Fig. 6is a sectional plan similar to Fig. 3 and shows two positions of thegearshifting mechanism for permitting two rotations of the driven gear.Fig. 7 is a detail longitudinal section, on an enlarged scale, of adetent device, hereinafter described, for holding the driven gear ineither of its exextreme positions, the section being taken in line cl(I, Fig. 2; and Fig. 8 is a similar view of brake mechanism for stoppingthe rotation of the driven gear and holding the same in its normalposition, the section being taken in line 6 c, Fig. 2.

Similar characters represent like parts in all the figures of thedrawings.

My present invention comprises, in combination with a driving-gear andwith a rotatable driven gear shiftable from one to the other of twoextreme positions into and out of gear withsuch driving-gear, and incombination also with means for carrying the driven gear in an orbitcorresponding with the driving-gear, of gear-shifting means controlledby the rotation of the driven gear and operative for shifting the drivengear from one of the aforesaid positions to the other at a predeterminedpoint in the orbit thereof.

I prefer to employ a circular driving-gear and a driven gear normallyout of gear with such driving member and having means for revolving thedriven gear about the drivinggear, together with means for starting therotation of the driven gear while in its normal position, thegear-shifting means operative by such rotation being, preferably, in thenature of gear-coupling means adapted for effecting the coupling of thetwo gears to thereby continue the rotation of the driven gear during itsrevolution.

A framework suitable for carrying the several operative parts of themechanism is shown herein at A, having a main shaft, such as D, carryinga rotary turret or frame, such as H, which in turn is illustrated assupporting for rotation relatively thereto a driven gear, such as 12,which driven gear is adapted to be rotated when in gear therewith bymeans of a driving-gearsuch, forinstance, as that shown at. 13. Thisdriving gear is represented in-t-he present case in the form of acircular internal gear; but it will be obvious that it might be anexternal gear and have an orbit other than a circular orbit. Normallythe driven gear is preferably out of mesh with the driving-gear and isshiftable transversely of the plane of the driving-gear into meshtherewith. As is usual in mechanisms of this type, the driven gear isillustrated carrying, for rotation and revolution in unison therewith, astarting-arm, such as 26, which is operative in the present case forcommencing the rotation of this gear, the rotation of the starting-armbeing shown as effected, in a manner substantially similar to thatdescribed in my patent hereinbefore referred to, by means of a suitablegearstarter interposable in the path of said arm.

A series of gear-starters or latches, constructed for interposition inthe path of the starting-arm in the manner just described, isillustrated at L, operated, respectively, in the well-known manner bymeans of corresponding keys'such-, for example, as are illustrated at15. These keys for operating the latches may be of any desiredconstruction and are represented in the drawings as simplespring-retracted plun-gers working in suitable vertical apertures in theforward part of the main frame A- and adapted, when depressed, to engagethe rear ends of their respective latches. These latches are alsoillustrated as of well-known construction, having springs 52 forcarrying them to their forward or projected positions when released bythe keys; springs, such as 53, for holding them latched in theirretracted positions; stops, such as 55, for limiting the forwardmovements of the latches, and catches, such as 54, for engagingcorresponding catches 20 on the main frame.

The starting-arm (illustrated at 26) is preferably of the type describedin my hereinbefore-mentioned patent, and is shown in position andadapted to push back the gearstarter or latch after being operatedthereby, this starting-arm being represented in the present instance ashaving a starting-finger 26, which when engaged by the gear-starter orlatch is rotated, and thus rotates the arm and the driven gear, and asalso having a resetting-finger 26", which when the startingarm is inline with the gear-starter exerts a toggling action upon the latch andforces the same back to its normal position, thus resetting the samebefore being disengaged therefrom.

The driven gear is illustrated in the drawin gs carried for rotation inunison with ashaft 6, journaled in the frame or turret H, and is alsorepresented mounted for vertical reciprocation thereon. In the presentinstance this gear is shown having a plurality of pins, such as 34,rigidly secured thereto and passing through apertures in a pair ofarmsli in fixed relation with the shaft 6. The driven gear is alsoillustrated fixedly secured to a long sleeve 12, journaled upon theshaft 6 so as to have a vertical movement thereon.

It will be apparent that both the driven gear and its sleeve will rotatein unison with the shaft, owing to the positive engagement of theguide-pins 34: with the fixed arms (3', and that the driven gear willhave its shiftin g or reciprocatory movement independently of themovement of the shaft, so as to permit the engagement and disengagementof the driving and driven gears, the starting-arm 26 and the fixed arms6 being shown having stop-shoulders at opposite sides, respectively, ofthe lower arm of the turret or frame II to maintain the shaft and itsconnected parts in their proper vertical positions.

The driving-gear 13 is preferably disposed so as to have its pitch-lineconcentric with the axis of the driving-shaft D, and is shown herein assupporting a pair of cam-segments, such as 39 and 40, each of which isillustrated provided with a cam-face inclined to the plane ofthedriving-gear and having its longitudinal edges defined by arcs havingtheir cen-- tors in the axis of the'main driving-shaft, these cam-facesbeing designated, respectively, by 39 and 40, located in adjacentparallel planes. Each of the cam-segments 39 and 40 may be considered ascomprising a plurality of gear-shifting members or cams, one for each ofthe latches or keys of the mechanism. As the cam-segment 39 is in thenature of a coupling-segment and that at 40 an uncoupling-segment, itwill be apparent that the gear-shifting members of the former constitutecoupling members or cams, while those of the latter are in the nature ofuncoupling cams or members.

Two gear-shifting members adapted to co operate wit-h the cam-segmentsjust described are illustrated at 36 and 37, carried for rotation andrevolution in unison with the driven gear, the former constituting agear-shifting coupling member or cam and the latter a gearshiftinguncoupling member or cam, these two arms being illustrated hereinmounted in fixed relation with the driven gear. The arm 36 is shownherein having a cam-face 36, inclined at an angle corresponding to thatof the face 39, and the arm 37 is preferably provided with a similarcam-face 37' for cooperating with that at 40.'

It will be obvious that either arm, operating in conjunction with itsproper cam-segment or portion thereof, forms therewith gearshiftingmeans operative for carrying the driven gear from one of its extremepositions to the other, the arm 36 and the segment 39, or proper portionthereof, forming gear-coupling means controlled by the rotation of thedriven gear when operated by the startingarm, and the'arm 3'7 and thesegment 40, or proper portion thereof, constituting gear-uncouplingmeans, operative, as will be hereinafter more particularly pointed out,by the continued rotation of the driven gear after a predeterminednumber of rotations thereof.

As is well understood in the art, when a gear-starter or latch isinterposed in the path of the starting-arm the driven gear will bepartially rotated in unison with said arm. The coupling-arm 36 is solocated that as the starting-arm is engaged by the gear-starter and saidarm begins to rotate the cam-face 36 will be forced up the correspondingcamface of its cooperative coupling member or cam of the cam-segment 39and will thereby cause the driven gear to be shifted from its normalposition out of engagement with the driving-gear, Fig. 2, into gear withsaid driving-gear, as shown in Fig. 4, the shifting movement takingplace in a direction transversely of the driving or internal gear.

As it is obvious that some means must be employed in the constructionshown herein for preventing the return of the driven gear and itsconnected parts to their normal positions on the rotation of the arm 36out of engagement with the cam-segment 39, I have illustrated herein adetent device for holding said gear up in the position shown in Fig. 4

until the action of the uncoupling members takes place. In the formthereof herein shown this detent device preferably comprises aspring-arm, such as 7 fixedly secured to one of the arms 6' and having adetentpin 7 working in a suitable aperture in said arm and adapted toengage the walls of either one of a pair of V-shaped or similar grooves34: in the corresponding guide-pin 34, these grooves corresponding,respectively, to the extreme upper and lower positions of the drivengear-that is, to the geared and idle positions, respectively, of thedriving and driven gears.

The driven gear is normally held against rotation in a predeterminedrotative position in any suitable manner. I have illustrated herein abrake mechanism for preventing such rotation, which in the formillustrated embodies a brake member, such as 19, in the form of asliding bolt working in the bore of a tubular boss, such as 18, on theturret or frame 11, and a spring 19 held in said boss under compressionand normally tending to force the bolt 19 into engagement with aflattened portion or surface 12 of the sleeve 12, as shown in Fig. 8,this flattened surface being of sufficient length to permitreciprocation of the driven gear and its connected devices.

After the commencement of the rotation of the starting-arm and thedriven gear has been effected by the gear-starter the rotation of thedriven gear is continued by the drivinggear until the uncoupling-arm 37is in position to engage the cam-surface of the proper portion of thecam-segment 40, whereupon the force of the detent-pin 7" will beovercome by the toggling action of the cam-faces 1, and the cam-face37', riding down the camface ID, will cause the shifting of the drivengear to its normal position, as illustrated in Fig. 5.

The uncoupling of the driven gear from the driving-gear may be eifectedat the end of one or more rotations of such driven gear, as may bedesired; but in the construction herein illustrated I have shown meansfor uncoupling the gears at the end of one rotation, when the couplinghas been effected by the operation of any one of the series of latches,and at the end of two rotations when the coupling has been accomplishedby one of the other series of gear-starters. In the present instancethe'cam-segment 4.0 is represented embodyin g aplurality of connecteduncoupling members in fixed relation with the driving-gear, and theseuncoupling members may be divided into two sets, in the first of whicheach uncoupling member is so located as to engage the uncoupling-arm 37at such a distance from the corresponding starting-pointviz., theprojected latch of that setas corresponds to a determined num ber'ofrotations of the driven gear; and in the second of which each uncouplingmember is located to engage such arm at a distance from thestarting-point or latch of such se't, corresponding to a greater numberof rotations of the driven gear.

The five upper latches (shown in Fig.1 of the drawings) are illustratedin the present case as operative to start the rotation of the drivengear at such points that said gear will have but a single rotationbefore it is uncoupled from the driving gear, while the seven lowergear-starters are represented as serving to start the driven gear atsuch points that two rotations will be accomplished before thisuncoupling is effected. This will be obvious by reference to Figs. 3 and6, respectively, in the former of which the starting-arm is shownengaged by the lowermost one of the upper tier of latches, thecam-segment 40 being so located that the proper coupling member orportion of the segment will be operative to engage the uncouplingarm 37and shift the driven gearto its normal position when these uncouplingmembers come into operative relation with each other, while in thelatter figure the lowermost one of the lower tier of gear-starters isillustrated as operative for starting the rotation of the driven gear atsuch a point that at the end of one of its rotations the driven gearwill not be in positionto carry its uncouplingarm into engagement withthe cam-segment 40, and hence said gear will continue its rotativemovement until the uncoupling-arm 37 is again brought to a point whereits uncoupling cam-face intercepts the arc defining the inner edge ofthe cam-segment 40 when the uncoupling-arm will,at the end of the secondr0- tation of the driven gear, engage the proper uncoupling member orportion of such camsegment and effect the uncoupling of the two gears inthe manner before described.

By the proper positioning of the gear-start- ICC ers and thecam-segments it will be apparent that Within limits any desired numberof latches may be operated to start the rotation of the driven gear atsuch points, respectively, that the uncoupling will be accomplished atthe end of one or more of such rotations, and that the remainder of thelatches may be actuated to start the rotation of the driven gear at suchother points, respectively, that two or more rotations will be completedbefore the uncoupling-arm of the orbitally-movable gear strikes theuncoupling cam-face of the segment 40.

While my invention is shown and described as preferably operative in anorbital path, yet it is not limited thereto.

Having thus described my invention,what I claim is- 1. The combinationwith a driving-gear, of a driven gear; means for carrying the drivengear in a path corresponding with that of the driving-gear; and meanscontrolled by the rotation of the driven gear, and operative for bodilyshifting said driven gear into and out of engagement with thedriving-gear at a predetermined point in the path thereof.

2. The combination with a drivinggear, a rotatable driven gear bodilyshiftable between two extreme positions into and out of gearwith thedriving-gear; and means for carrying the driven gear in a pathcorresponding with that of the driving-gear; of a starting-arm connectedfor rotation and movement in unison with the driven gear; a gearstarterinterposable in the path of said arm for starting the rotation of thedriven gear; and gear-coupling means controlled by such rotation of thedriven gear and operative for bodily shifting said driven gear towardand into gear with the driving-gear, to thereby continue the rotation ofthe driven gear.

3. The combination with a driving-gear, a rotatable driven gear bodilymovable into and out of gear with the driving-gear; and means for movingthe driven gear in a path corresponding with the path of thedriving-gear; of gear-shifting means controlled by the rotation of thedriven gear, and operative for bodily shifting said driven gear from oneof its extreme positions to the other.

4. The combination with a driving-gear, and fixed cam-surfaces adjacentthereto; of adriven gear; and means controlled by the rotation of saiddriven gear, and in intermittent engagement with said cam-faces.

5. The combination with a driving-gear; a rotatable driven gear bodilyshiftable between two extreme positions into and out of gear with thedriving-gear; and means for carrying the driven gear in an orbitcorresponding with the driving-gear; of gear-shifting means controlledby the rotation of the driven gear, and operative for bodily shiftingsaid driven gear from one of its extreme positions to the other, at apredetermined point in the orbit thereof.

6. The combination with a driving-gear; a

rotatable driven gear bodily shiftable between two extreme positionsinto and out of gear with the driving-gear; and means for carrying thedriven gear in an orbit corresponding with the driving-gear; ofast-artingarm connected fori'otation, and orbital movement, in unisonwith the driven gear; a gearstarter interposable in the path of said armfor starting the rotation of the driven gear; and gear-coupling meanscontrolled by such rotation of the driven gear, and operative for bodilyshifting said driven gear toward, and into gear with, the driving-gear,to thereby continue the rotation of the driven gear.

7. The combination with a driving-gear; a rotatable driven gear bodilyshiftable between two extreme positions into and out of gear with thedriving-gear; and means for revolving the driven gear in an orbit aboutthe axis of the driving-gear; of gear-shifting means controlled by therotation of the driven gear, and operative for bodily shifting saiddriven gear from one of its extreme positions to the other, at apredetermined point in the revolution thereof.

S. The combinationwith a driving-gear; a rotatable driven gear normallyout of gear with said driving-gear, and bodily shiftable into and out ofgear with the driving-gear; and means for revolving the driven gear, inan orbit about the axis of the driving-gear; of means for starting therotation of the driven gear while in its normal position; andgear-coupling means controlled by suchrotation of the driven gear, andoperative for bodily shifting said driven gear toward, and into gearwith, the driving-gear, to thereby continue the rotation of the drivengear.

9. The combination with a driving internal gear; a rotatable driven gearnormally out of gear with said internal gear, and bodily shiftable intoand out of gear with the internal gear; and means for revolving thedriven gear in an orbit about the axis of the internal gear; of meansfor starting the rotation of the driven gear while in its normalposition; and gear-coupling means controlled by such rotation of thedriven gear, and operative for bodily shifting said driven gear toward,and into gear with, the internal gear, to thereby continue the rotationof the driven gear.

10. The combination with a driving internal gear; a rotatable drivengear normally out of gear with said internal gear, and bodily shiftabletransversely of the plane of, and into and out of gear with, theinternal gear; and means for revolving the driven gear in an orbit aboutthe axis of the internal gear; of means for starting the rotation of thedriven gear while in its normal position; and gear-coupling meanscontrolled by such rotation of the driven gear, and operative for bodilyshifting said driven gear toward, and into gear with, the internal gear,to thereby continue the rotation of the driven gear.

' 11. The combination with a driving internal gear; a rotatable driven'gear'normally out of gear with said internal gear, and bodily shiftabletransversely of the plane of, and into and out of gear with, theinternal gear; and means for revolving the driven gear in an orbit aboutthe axis of the internal gear; of means for starting the rotation of thedriven gear while in its normal position; and a pair of gear-shiftingcoupling members, one connected for rotation and revolution in unisonwith the driven gear, and the other in fixed relation with the internalgear, and located to shift the driven gear and its coupling memberbodily on such rotation of the driven gear, to thereby carry said drivengear into gear with the internal gear, and continue the rotation of thedriven gear.

12. The combination with a driving internal gear; a rotatable drivengear normally out of gear with said internal gear, and bodily shiftabletransversely of the plane of, and into and out of gear with, theinternal gear;

and means for revolving the driven gear in an orbit about the axis ofthe internal gear; of means for starting the rotation of the driven gearwhile in its normal position; and a pair 01' gear-shifting couplingmembers, one connected for rotation and revolution in unison with thedriven gear, and the other in fixed relation with the internal gear, andone of said coupling members having a cam-face adapted to cooperate withthe other coupling member and located to shift the driven gear and itscoupling member on such rotation of the driven gear, to thereby carrysaid'driven gear into gear with the internal gear, and continue therotation of the driven gear.

13. The combination with a driving internal gear; a rotatable drivengear normally out of gear with said internal gear, and shiftabletransversely of the plane of, and into and out of gear with, theinternal gear; and means for revolving the driven gear in an orbit aboutthe axis of the internal gear; of means for starting the rotation of thedriven gear while in its normal position; and a pair of gearshiftingcoupling-cams, one connected for rotation and revolution in unison withthe driven gear, and the other in fixed relation with the internal gearand located to shift the driven gear and its coupling-cam on suchrotation of the driven gear, to thereby carry said driven gear into gearwith the internal gear, and continue the rotation of the driven gear.

la. The combination with a driving internal gear; a rotatable drivengear normally out of gear with said internal gear, and shiftabletransversely of the plane of, and into and out of gear with, theinternal gear; and means for revolving the driven gear in an orbit aboutthe axis of the internal gear; of means for starting the rotation of thedriven gear while in its normal position; and a pair of gearshiftingcoupling members, one in fixed relation with the internal gear, and theother movable in unison with the driven gear and located to engage thefirst-mentioned coupling member by a toggling movement on the rotationof the driven gear, and one of said coupling members having its workingface cam-shaped and located to shift the driven gear on the togglingmovement of its coupling member, to thereby carry said driven.

gear into gear with the internal gear, and continue the rotation of thedriven gear.

15. The combination with a driving-gear; a rotatable driven gearnormally out of gear with said driving-gear, and bodily shiftable intoand out of gear with the driving-gear; and means for carrying the drivengear in an orbit corresponding with the driving-gear; of means forstarting the rotation of the driven gear while in its normal position;gear-coupling means controlled by such rotation of the driven gear, andoperative for bodily shifting said driven gear toward, and into gearwith, the drivingrgear, to thereby continue the rotation of the drivengear; and gear-uncoupling means controlled by such continued rotation ofthe driven gear, and operative for bodily shifting said driven gear toits normal position at a predetermined point in said rotation, tothereby stop the rotation of said driven gear.

16. The combination with a driving inter nal gear; a rotatable drivengear normally out of gear with said internal gear, and shiftabletransversely of the plane of, and into and out of gear with, theinternal gear; and means for revolving the driven gear in an orbit aboutthe axis of the internal gear; of means for starting the rotation of thedriven gear While in its normal position; a pair of gear-shiftingcoupling members, one connected for rotation and revolution in unisonwith the driven gear, and the other in fixed relation with the internalgear, and located to shift the driven gear and its coupling member onsuch rotation of the driven gear, to thereby carry said driven gear intogear with the internal gear, and continue the rotation of the drivengear; and a pair of gear-shifting uncoupling members, one connected forrotation and revolution in unison with the driven gear, and the other infixed relation with the internal gear and located to shift the drivengear and its uncoupling member to their normal positions at apredetermined point in said rotation, to thereby stop the rotation ofsaid driven gear.

17. The combination with a driving internal gear; a rotatable drivengear normally out of gear with said internal gear, and shiftabletransversely of the plane of, and into and out of gear with, theinternal gear; and means for revolving the driven gearin an orbit aboutthe axis of the internal gear; of means for starting the rotation of thedriven gear while in its normal position; a pair of gear-shiftingcoupling members, one connected for rotation and revolution in unisonwith the driven gear, and the other in fixed relation with the internalgear, and one of said coupling members having a cam-face adapted tocooperate with the other coupling member and located to shift the drivengear and its coupling member on such rotation of the driven gear, tothereby carry said driven gear into gearwith the internal gear, andcontinue the rotation of the driven gear; and a pair of gear-shift- 1nguncoupling members, one connected for rotation and revolution in unisonwith the driven gear, and the other in fixed relation with the internalgear and located to engage the first-mentioned uncoupling member at apredetermined point in said rotation, and one of said uncoupling membershaving a camface located to shift said driven gear and its uncouplingmember to their normal positions on such engagement of the uncouplingmembers.

18. The combination with a driving internal gear; a rotatable drivengear normally out of gear with said internal gear, and shiftabletransversely of the plane of, and into and out of gear with, theinternal gear; and means for revolving the driven gear in an orbit aboutthe axis of the internal gear; of means for starting the rotation of thedriven gear while in its normal position; a pair of gear-shiftingcoupling-cams, one connected for rotation and revolution in unison withthe driven gear, and the other in fixed relation with the internal gearand located to shift the driven gear and its coupling-cam on suchrotation of the driven gear, to thereby carr Y said driven gear intogear with the internal gear, and continue the rotation of the drivengear; and a pair of gear-shifting uncoupling-cams, one connected forrotation and revolution in unison with the driven gear, and the other infixed relation with the internal gear and located to shift said drivengear and its uncoupling-cam to their normal positions at a predeterminedpoint in said rotation, to thereby stop the rotation of said drivengear.

19. The combination with a driving-gear; a rotatable driven gearnormally out of gear with said driving-gear, and shiftable into and outof gear with the driving-gear; and means for revolving the driven gearin an orbit about the axis of the. driving-gear; of a startingarm and agear-shifting coupling member, both carried for rotation and revolutionin unison with the driven gear; a gear-starter interposable in the pathof said arm for starting the rotation of the driven gear; and agear-shifting coupling member in fixed relation with the drivinggear,and located to shift the driven gear and its coupling memher 011 suchrotation of the driven gear, to thereby carry said driven gear into gearwith the driving-gear and continue the rotation of the driven gear.

20. The combination with a driving-gear; a rotatable driven gearnormally out of gear with said driving-gear, and 'shiftable into and outof gear with the driving-gear; and means for revolving the driven gearin an orbit about the axis of the driving-gear; of a start ing-arm, agear-shifting coupling member,

I and a gear-shifting uncoupling member, all

carried for rotation and revolution in unison with the driven gear; agear-starter interposable in the path of said arm for starting therotation of the driven gear; a gear-shifting coupling member in fixedrelation with the internal gear, and located to shift the driven gearand its coupling member on such rotation of the driven gear, to therebycarry said driven gear into gear with the drivinggear, and continue therotation of the driven gear; and a gear-shifting uncoupling member infixed relation with the driving-gear, and located to shift the drivengear and its uncoupling member to their normal positions at apredetermined point in said rotation, to thereby stop the rotation ofsaid driven gear.

21. The combination with a driving-gear; a rotatable driven gear'shiftable into and out of gear with the driving-gear; and means forrevolving the driven gear in an orbit about the axis of thedriving-gear; of a gear-shifting coupling member movable in unisonwiththe driven gear; a starting-arm connected for rotation and revolutioninunison with the driven gear; a gear-starter interposable in the pathof said arm for starting the rotation of the driven gear; and agear-shifting coupling member in fixed relation with the driving-gear,and located to shift the driven gear and its coupling member on suchrotation of the driven gear, to thereby carry said driven gear into gearwith the driving-gear, and continue the rotation of the driven gear.

22. The combination with a driving-gear; a rotatable driven gearshiftable into and out of gear with the driving-gear; and means forrevolving the driven gear in an orbit about the axis of thedriving-gear; of a gear-shift ing coupling member in fixed relation withthe driven gear; a starting-arm connected for rotation and revolution inunison with the driven gear; a gear-starter interposable in the path ofsaid arm for starting the rotation of the driven gear; and agear-shifting coupling member in fixed relation with the driving-gear,and located to shift the driven gear and its coupling member on suchrotation of the driven gear, to thereby carry said driven gear into gearwith the driving-gear, and continue the rotation of the driven gear,substantially as specified.

23. The combination with a driving-gear; a rotatable driven gearnormally out of gear with said driving-gear, and bodily shiftable intoand out of gear with the driving-gear; and means for carrying the drivengear in an orbit corresponding with the driving-gear; of a starting-armconnected for rotation and orbital movement in unison with the drivengear, and in position and adapted to push back the gear-starter afterbeing operated thereby; a gear-starter interposable in the path of saidarm for starting the rotation of said arm and the driven gear; andgearshifting coupling means controlled by such rotation of the drivengear, and operative for bodily shifting said driven gear toward, and

into gear with, the driving-gear, to thereby continue the rotation ofthe driven gear.

B l. The combination with a driving-gear; a rotatable driven gearnormally out of gear with said driving-gear, and shiftable into and outof gear with the driving-gear; and means for carrying the driven gear inan orbit corresponding with the driving-gear; of means for starting therotation of the driven gear at either of two separated points in itsorbit while out of gear with the driving-gear; gearcoupling meanscontrolled by such rotation of the driven gear, and operative forshifting said driven gear toward, and into gear with, the driving-gear,to thereby continue the rotation of the driven gear; an uncoupling-armconnected for rotation and orbital movement in unison with the drivengear; and a pair of uncoupling members in fixed relation with thedriving-gear, and one located to engage said uncoupling-arm at such adistance from one startingpoint as corresponds to a determined number ofrotations of the driven gear and to shift the driven gear to its normalposition, and the other located to engage said uncoupling-arm at such adistance from the other starting-point as corresponds to a greaternumber of rotations of the driven gear and to shift the driven gear toits normal position.

25. The combination with a driving-gear; a rotatable driven gearnormally out of gear with said driving-gear, and shiftable into and outof gear with the driving-gear; and means for carrying the driven gear inan orbit corresponding with the driving-gear; of a starting-armconnected for rotation and orbital movement in unison with the drivengear, and in position and adapted to push back the gear-starters,-respectively, after being operated thereby; a pair of gear-startersinterposable at different points, respectively, in the path of said armfor starting the rotation of said arm and the driven gear; gear-couplingmeans controlled by such rotation of the driven gear, and operative forshifting said driven gear toward and into gear with, the driving-gear,to thereby continue the rotation of the driven gear; an uncoupling-armconnected for rotation and orbital movement in unison with the drivengear; and a pair of uncoupling members in fixed relation with thedriving-gear, and one located to engage said uncoupling-arm at such adistance from one gear-starter as corresponds to a determined number ofrotations of the driven gear and to shift the driven gear to its normalposition, and the other located to engage said uncoupling-arm at such adistance from the other gear-starter as corresponds to a greater numberof rotations of the driven gear and to shift the driven gear to itsnormal position.

FRANCIS H. RICHARDS. \Vitnesses:

FRED. J. DOLE, BENTON N. PARKER.

